Dr. Doormat- An Antimicrobial Treated Doormat 18-Inch by 24-Inch, Charcoal Gray Indoor use mat is allergy friendly & made in the USA; care instructions: shake out, vacuum, if heavily soiled, hose down use mild detergent and hang to dry Surface area is made of the highest quality stain resistant recycled and virgin polypropylene fiber Durable, flexible, industrial strength, rubber backing with molded rubber nibs reduces mat movement Antimicrobial formula is infused deep into the doormat creating a positive charge, disabling odors from microbes (bacteria, fungus, mold) on the mat, protects mat from degradation Doormat is framed with a raised, inch wide border that forms a tray trapping water and dirt